If an atom gains or loses an electron it tends to become what?

If I contain 1.86g of krypton gas in a container with a volume of 17.5 liters and at a temperature of 190F, what is the pressure inside the container?

How do you find a theoretical mass? Is there a difference between theoretical mass and theoretical yield?

Through which of the following ways can heat be transferred? A. only by direct contact between objects at different temperatures OB. by direct or indirect contact between objects at different temperatures C.

Which of the following statements contains supporting evidence for the Big Bang Theory? -Evidence, like the light elements throughout the universe, shows that the universe is continually expanding.

How would you classify the fossil fuel, petroleum, in terms of a resource? Justify your answer in two or more complete sentences.

Which pair of nitrogen bases will form a bond in a DNA molecule? a. cytosine and adenine b. adenine and thymine c. guanine and thymine d. thymine and cytosine

Most meteors that fall into the earths atmosphere burn up before reaching the ground. Why is this?

Imagine a chemist is in the lab and trying to make some chemical reactions happen. In one reaction she reacts chemicals in an exothermic reaction and there is an increase in entropy.

Which of the following requires an oxidizing agent? Al yields Al3+ 2 O yields O2 Cl2 yields 2 Cl- Ag + yields Ag

Type of ion formed by group 2A elements